Barclaycard house, 1234 pavilion drive, northampton, nn4 7sg, mail van area 24. Barclaycard, 51 saffron road, wigston, le18 4ga. Webwatch our video to see how to make an international payment using the barclays app. The time the payment will take depends on which country you’re sending it to and how the. Webthere are several options to make a payment. Use the barclays us app to make a payment 2. Pay online via your barclays online account 3. Mail your payment to the address on your statement: Credit card payments p…